Half to albert schmid



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GAS ENGINE.

No. 396,022. x Patented Jan. 8, 1889.

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No. 396,022. Patented Jan. 8,1889

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Patented Jan, 8,1889.

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J. O. BEOKFELD. GAS ENGINE.

No. 396 022. Patented Jan.- 8, 1889,

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Nrrnn STATES ATENT FFECE.

J. CHARLES BECKFELD, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO ALBERT SOHMID, OF SAME PLACE.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent 1\l0. 396,022, dated January 8, 1889.

Application filed November 23, 1887. Serial No. 255,979- (No model.)

To all whom it may concern:

Be it known that I, J. CHARLES BECKFELD, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Gas-Engines, of which improvement the t'tdlowing is a sp cification.

The invention herein relates to certain improvements in that class or kind of engine in which motion is imparted by a series of explosions of inflammable gases in the cylinder of the engine. Ingeneral terms, the inventitm consists in the construction and combination of devices or mechanism, all as more fully hereinafter described and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a sectional elevation of my improved engine, the section being taken on a plane passing through the axis of the crank-shaft. 2 and 3 are similar views, the sectionsbeing taken on the lines :50 and y y, Fig. .1, respectively. 2 5 Fig. 1 is a sectional plan on an enlarged scale, the section being taken on the line 1' 2-, Fig. Fig. 5 is a vertical section of the valve mechanism on the line 1 f, Fig. 3. Figs. ti, 7, and 8 are transverse sectional views of the valve controlling the flow otgas to the explosiou-chamber and the ignition thereof.

On the crank-case 1 .is secured the casting, in which is formed the power-0y]inder3, compression-cylinder 1, and pockets 5, in which the valve-rods work, as will. be more fully hereinafter at 'lorth. On opposite sides of the cylimler-easting are SGClllOtl the valvechests 6 and 7, havinghorizontal valve-chambers formed therein, as shown in Fi 's. 2, 4, and 5, by shells S and 9, having a cylindrical exterior and a conical interior. \Vithin these chambers Sand 9 are arranged the conical valves 10 and 11. Through these valves are passed the stems 12 and 13, each provided at 4 5 one end with a crank-arm, 14, said crank-arms being pivotally connected to valve-rods 15, attached at their lower ends to straps16,surroundingeccentrics 17 and 18 on. the crankshaft 19, which is mounted in suitable bearings in the ends of the crank-case 1. (See Fig. 1.) 011 the valve-stems 12 and 13, adjacent to the crank-arms 14, (see Fig. h) are formed conical enlargements 20, fitting within correspondingly-shaped openings 21, formed in one of the ends of each of the shells S and 9, and on the opposite threaded ends of the stems 12 and 13 are screwed nuts 22, which bear against springs 23, interposed between said nuts and the large ends of the valves 10 and 11, thereby holding said valves yieldingly against their seats. It will be observed that as the conical valves 10 and 11 and the conical enlargements 20 on the valve-stems are oppositely arranged-21 8., with their small ends adjacent the springs 23 will serve to hold both parts in position. It will also be observed that the valves are oppositely arranged, thereby bringing the crank-arms l-Il in line with the pockets 5 for the valve-rods, said pockets being connected with openings 24 in the ends of the valve-chests. (See Fig. 4.)

In the wall of the valve-chest (i is formed an opening, 25, for the admission of air, said opening communicating by a port, 26, with the interior of the valve-chamber 8. Gas is introduced into the chamber 8 by the pipe 27 and port 28, and the combined gas and air escape by the port 29 and passage 30 from said chamber into the compressingcylinder &. The ports 28 and 29 are arranged in line with each other, so that bot-h ports will be simultaneously opened and closed by the move ment of the valve 10, in which is formed a groove or recess, 31, of such a width as to form a passage connecting in one position of the valve the air-port 26 with the port 29, the latter being simultaneously connected with the gas-inlet port 28, which, as above stated, is opened and closed simultaneously with the port 29.

Gas and air are admitted into the compress ing-cylinder in the manner above described during the downward movement of the piston As soon as or before the piston reaches the lower limit of its movement, the valve 10 9 5 is shifted so as to close the ports 38 and 29. During the upward movement of the piston 32 the gas and air are forced through the passage 33 and port 3% into the chamber or recess of the valve 11, which has previously 10o been shifted so as to bring said chamberinto communication with the port 34. The chamber 35, as shown in Figs, 2, t), '7, and 8, extends around the valve 11 about half its eir- (aunferenee, a portion being open and a portion, as so, within the body of the valve aid portion so being provided with an exit-port, 237, which at one point in the movement ot' the valve registers with theport23S,eonno i-ted with the explositm-ehambor by the passage EltJ. The combined gas and air eseape by the above-doseribed ports and passages from the compression-eylinder to the explosion-(whamber. In the wall of the \HiYQ-(titeHt J is Formed a port, 4-0, so loeatod with reteronee to the port 3- and theeireumt'erential openingorreeess :35 in the valve 1 l as to be in eonunnni- Cation with. the port l-t tor a short period on the opening oi. said port by the movement of the valve to perinitotf tho esea a'e ot' the combined gas and air from tho eompression-eyl inder, thereby permitting of the eseape ot' a small portion of the gas and air through the port it), and then by the pipe ll totheburner 12. This lnirner :12, which. is located in a roeess, t3, in the valve-chest 7, consists of a metal bloek. having a number of small per- [OPfl-ilitHlS the'retlirough. This roeess 4'13 is connected by a passage, 1:4, with the ehimney 115, attaehial to the (-liest 7, and also intermittent with a recess, to, in \\'lli(ll is located the burner t7, similar in oonstruet-ion to the burner 4-1, gas and air being supplied thereto by a passage, 48, extending from tho passage E39, and. of sueh a dianu-ter as to permit ot' the ttow ot? gas, but; not the passage of flame.

In the wall of tho valve it is formed a groove or reoess, if), of such dimensimis as to eonneet at one point in its movomonttho port as and reeess it containing the burner 4-7, (see Fig. 7,) and also at; a eertain other point in its movement to etmneet the reeess it; and the 'iassago it. (See Figs. ti and H.) An ordinary gas-burner, 50, is loeatod in the ehinlney below the passage-Lt, and in suoh proy imity thereto thatany gas eseaping t'rom said passage will be ignited by the flame ot' the burner 50.

The operat ion otfthe aln ve-deseribedparts is as follows: The eoinbinod gas and air eseape by the passage, 3-) and. port ll: into the reeess and ill; of the valve 1 t, a small portion eseaping t-heneo by the port it) and pipe l1 to theburner Tho esez tping tin-(nigh the burner (the passage it) to tho ehimney is ignited by the t'lamo from the burner From the recess 35 St} the eonibintal. gas and air (the port if) being elosed) escape by the ports 37 and 38 and the passage 39 into the explosion-ehamber. lly a further rotation ot the valve it. to the right the recess to and passa 'e it are eonneeted by the groove or recess 49 in the valve, whereupon the gas escaping from the burner $7 is ignited by the flame from the burn er 2. As soon as the gas from the burner -i-7 is ignited, as above deseribtal, the movement of the valve ll is reversed, and the recess to and port 38 are connected bythe groove it), whereupon the Name From the burner t7 ignites the gas in the explosion ehaniber. The travel of the valve ll. when rotating to the left is sueh that; the port 4-0 is uncovered, thereby pern'iitt ing the eonibined gas and air in the reeess 35 1313 to escape and burn at tholnirner 4 2. ln high-spetul engines it is neeessanv to employ a very hot flame in order to ignite the gas in the oxplosion-elnnnher at every stroke, and this is especially the case where natural gas is employed; hence I employ a tlame produeed by a proper mix,- tnre ot gas and air,the burner on being employed solely in starting thoengine (seol igs. ti and 7) and until its movoinentshave beeome so rapid that a praetieally eonstant How of gas is maintained through the pipe -11, \\']li('il is sut'tieiently large to supply the burner t3 between oaeh stroke ot the valve ll. After the engine has obtained a sut'tioient speed, as above stated, the supply of gas to burner 5t.) is turned otii'.

The exhaust-port all is located at a point; approximately midway between. the extreme limits of movement of the power-piston 52. This port or passage 5] eonneetin the powereylinder and the val v(. -(;-hamber R, is plaeed in (:oinmunieation with the outlet-port at eertain intervals, dependent on the speed of the engine, by the groove or ret-ess 5i, formed in the valve lt Their eeeentrie 17, operating the valve 10, is made adjustable twansversely ot' or around the 1mwor-shatt, and isx-onneeted to a suitable governing mechanism, 55, whereby the amount or intervals otf movement ot? the valve 10 are regulated, andv henee as the valve l0 governs or eontrols the flow of gas and airt'o the powor-eylinder, and also the exhaust of dead gases theret'rom, as will be readily uiulerstood, tho spoed ot' the engine is regulated either by the admission ot more or less gas and air into the power-oylinder, it being understood that the valve It is eonstrnoted to permit: of the passage otf all the gas and air from tho oinnprossion-("ylindor, and also by retaining more or less the dead gases in the piinvor-oylindor, and. thereby de tieriorating the quality ot the explosive 1nixtnre to that extent.

()n the valves ilt.) and ll are formed shoulders 5o, eonstrneted to bear against the ends ot' the valve-ehes s or shells s and t) for the [)lll'- pose otf preventing the valves I10 and ll 1 .t'rom being wedged in the shells by the pressure of the springs. These shoulders are eonstruettal to permit oi the valves fitting snuglybut with out binding upon their seats in the shells, and as said shoulders are gradually worn away the valves will bear a little harder upon their seats, whereupon the wearing-section will. be transferred from the shoulders to the faces of the valves until the pressure is again transferrtnl to the shoulders. In this way we are enabled to nntintain a tight but non-bindin eontaot between the valves and their seats.

I olaini herein as my invention- 1. In. a gas engine, the combination of a valve mechanism controlling the flow of gas and air from the compression-cylin(ler to the power-cylinder and the passage of flame from the igniter to the power-cylinder, a burner having a supply connection with the powercylinder, and aburn er connected to and receiviug its supply of gas and air through the Valve mechanism, substantially as set forth.

2. In a gas-engine, the combination of a Valve mechanism controlling the flow of gas and air from the compression-cylinder to the power-cylinder and the passage of flame from the igniter to the power-cylinder, a burner having a supply-connection with the power cylinder, a burner connected to and receiving its supply of gas and air through the valve mechanism, and a burner having an independent source of supply, substantially as set forth.

3. In a gas-engine, the combination of a Valve mechanism for controlling the passage of flame from the igniter to the power-cylinder, a burner having a supply-connection With the power-cylinder, and a burner receiving its supply of .gas and air from the compressioncylinder, substantially as set forth.

4. In a gas-engine, the combination of a compression-cylinder and a power-cylinder suitablyconnected for the passage of gas and air, a burner receiving its supply of gas and air from the compression cylinder, and a valve mechanism for controlling the passage of flame from the burner to the poWer-cylinder and preventing the extinction of the flame by the explosion substantially as set forth.

In testimony whereof I have hereunto set my hand.

J. CHARLES .BEOKFELD. Witn esses:

R. H. WHITTLEsEY, DARWIN S. WoLooTT. 

